Vehicle-mounted projection screen display method, device and system

Abstract

The invention provides a vehicle-mounted projection screen display method, device and system, and the method comprises the steps: obtaining terminal data transmitted by terminal equipment through a data transmission line; determining display information of data display equipment of the vehicle according to the vehicle state data of the vehicle in communication connection with the terminal equipment; under the condition that it is determined that the data display device displays the terminal data, serial communication processing is conducted on the terminal data and the vehicle state data to obtain terminal serial data, and the terminal serial data are displayed through the data display device; under the condition that the data display equipment does not display the terminal data, the vehicle machine serial data of the vehicle is displayed through the data display equipment, so that a user is allowed to project personal terminal equipment to a display screen in a cab of the vehicle, richer entertainment and information experience are provided, and the user experience is improved. And meanwhile, the requirements of vehicle manufacturers on functional diversity can be met.

Description

Background Art

[0002] The current smart car market is in a stage of rapid growth. According to statistics, with the advancement of technology, the smart car market has entered a stage of rapid growth. So far, more and more car companies have increased their investment in the research and development and production of electric vehicles, and the construction of charging infrastructure has also been strengthened. Consumers are gradually aware of the advantages of electric vehicles, and the demand for electric vehicles is growing rapidly. It is expected that the Chinese electric vehicle market will continue to grow rapidly in the next few years. Electric vehicle technology is also constantly improving. The increase in battery capacity, the increase in charging speed, and the extension of driving range will further enhance the performance and practicality of electric vehicles. In addition, electric vehicles will be more closely integrated with Internet of Vehicles technology and intelligent systems to provide drivers and passengers with more intelligent functions, services, and rich information and entertainment content, thereby enhancing the driving experience.

[0003] At present, car screen projection is realized through mobile phone interconnection and wireless screen projection. The mobile phone interconnection screen projection method requires the mobile phone to be connected to the car computer to realize the screen projection function, so the driver must keep the mobile phone connected to the car. If the mobile phone encounters a connection problem, the screen projection function may be limited. For example, when the mobile phone signal is weak or the network is unstable, the screen projection function may be interrupted or delayed; the communication connection of the wireless screen projection method depends on wireless network or Bluetooth, so it may be affected by factors such as signal interference and unstable connection, resulting in screen projection delays, freezes, etc. For example, in a crowded wireless network environment, the connection may be unstable, resulting in an unsmooth screen projection. Therefore, the existing car screen projection methods have limitations. Summary of the invention

[0004] In view of this, the present invention provides a method, device and system for in-vehicle screen projection display, which at least partially solve the technical problem that the current in-vehicle screen projection method has limitations in the prior art. The technical solution adopted by the present invention is:

[0005] According to one aspect of the present application, a vehicle-mounted screen projection display method is provided, comprising:

[0006] Acquire terminal data transmitted by the terminal device through the data transmission line;

[0007] Determining display information of a data display device of the vehicle according to vehicle status data of a vehicle in communication connection with the terminal device;

[0008] When it is determined that the data display device displays the terminal data, the terminal data and the vehicle status data are processed by serial communication to obtain the terminal serial data and display it through the data display device;

[0009] When it is determined that the data display device does not display the terminal data, the vehicle computer serial data is displayed through the data display device.

[0010] In an exemplary embodiment of the present application, determining display information of a data display device of the vehicle according to vehicle status data of a vehicle in communication connection with a terminal device includes:

[0011] In response to receiving a start signal sent by the vehicle, obtaining in real time the vehicle power value of the vehicle in the start state; the start signal indicates that the vehicle is in the start state;

[0012] When the vehicle power value is greater than or equal to the preset power threshold, the data display device is determined to display the terminal data; when the vehicle power value is less than the preset power threshold, the data display device is determined not to display the terminal data.

[0013] In an exemplary embodiment of the present application, the data display device includes a central control screen and a non-central control screen of the vehicle;

[0014] Wherein, according to the vehicle status data of the vehicle in communication connection with the terminal device, the display information of the data display device of the vehicle is determined, including:

[0015] In response to receiving a start signal sent by the vehicle, obtaining a vehicle speed value of the vehicle in a start state in real time; the start signal indicates that the vehicle is in a start state;

[0016] When the vehicle speed value is greater than zero, it is determined that the data display device corresponding to the central control screen of the vehicle does not display terminal data, and the data display device corresponding to the non-central control screen of the vehicle displays terminal data.

[0017] In an exemplary embodiment of the present application, determining display information of a data display device of the vehicle according to vehicle status data of a vehicle in communication connection with a terminal device includes:

[0018] In response to receiving a sleep signal sent by the vehicle, it is determined that the data display device does not display terminal data; the sleep signal indicates that the vehicle is in a sleep state.

[0019] According to one aspect of the present application, a vehicle-mounted projection display device is provided, the vehicle-mounted projection display device is arranged in a vehicle, and the vehicle-mounted projection display device includes:

[0020] The terminal interface module is used to establish a data communication relationship with the user's terminal equipment and obtain the terminal data transmitted by the terminal equipment through the data transmission line;

[0021] A terminal data processing module, connected to the communication bus of the vehicle, for determining display information of the data display device of the vehicle according to the vehicle status data of the vehicle;

[0022] The terminal data serial module is used to perform serial communication processing on the terminal data and the vehicle status data to obtain the terminal serial data when it is determined that the data display device displays the terminal data;

[0023] The data conversion module is used to convert and output the terminal serial data and the vehicle computer serial data.

[0024] In an exemplary embodiment of the present application, the terminal data processing module is connected to the CAN communication bus of the vehicle and is respectively connected to the CAN bus of the vehicle through I 2 The C communication bus establishes data communication relations with the terminal data serial module and the data conversion module.

[0025] In an exemplary embodiment of the present application, the terminal data serial module transmits the terminal serial data to the data conversion module through the serial data transmission protocol of the vehicle.

[0026] In an exemplary embodiment of the present application, a data conversion module is connected to the vehicle's on-board communication chip and a data display device; the on-board communication chip is used to send the on-board serial data to the data conversion module; the data display device is used to perform deserialization communication processing on the received serial data to obtain deserialized data and display it.

[0027] In an exemplary embodiment of the present application, at least one data transmission interface is deployed on the terminal interface module, and the data transmission interface is one of an HDMI signal interface, a DP signal interface, and a Type-c signal interface.

[0028] According to one aspect of the present application, a vehicle-mounted screen projection display system is provided, including a vehicle-mounted computer communication chip, a data display device and a vehicle-mounted screen projection display device, wherein the vehicle-mounted computer communication chip is communicatively connected with the data display device via the vehicle-mounted screen projection display device.

[0029] The present invention has at least the following beneficial effects:

[0030] The in-vehicle screen projection and display method of the present invention, in response to obtaining terminal data transmitted by a terminal device through a data transmission line, determines the display information of the vehicle's data display device according to the vehicle status data of a vehicle that is communicatively connected to the terminal device; when it is determined that the data display device displays the terminal data, the terminal data and the vehicle status data are processed by serial communication to obtain terminal serial data and display them through the data display device; when it is determined that the data display device does not display terminal data, the vehicle's car serial data is displayed through the data display device to allow the user to project his or her personal terminal device onto the display screen in the vehicle's cockpit, so as to provide a richer entertainment and information experience, while also meeting the vehicle manufacturers' demands for functional diversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A flow chart of a vehicle-mounted screen projection display method provided by an embodiment of the present invention;

[0033] Figure 2 A module connection block diagram of a vehicle-mounted screen projection display device provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of data communication of a vehicle-mounted screen projection display system provided by an embodiment of the present invention;

[0035] Figure 4 A module connection diagram showing the architecture of a vehicle in the prior art. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] HMI (Human Machine Interface) is the human-machine interface. In the vehicle system, it mainly refers to the interface for information exchange and control operations between the driver and the vehicle. The vehicle display is an important part of HMI, which provides the driver and passengers with a visual interface for vehicle information, entertainment content, navigation services and other functions. The vehicle display projection technology refers to the process of wirelessly transmitting the screen content of mobile devices (such as smartphones and tablets) to the vehicle display to achieve content sharing and convenient operation.

[0038] In-vehicle HMI design not only focuses on the presentation of information and the design of interactive operations, but also involves the integration of multiple interactive methods, such as voice, gestures, touch screens, and physical buttons, to ensure safety and convenience during driving. With the development of the automotive industry, there are more and more types of in-vehicle displays. During the development of vehicles, various car manufacturers have increased the number of screens in the cockpit to provide more information and functions to improve the driving experience and provide more convenience, such as vehicle information display, vehicle control and settings, entertainment and connectivity, and driving assistance functions. These screens include HUD head-up display, instrument panel display, central control screen, co-pilot screen, rear entertainment screen, air conditioning screen, armrest screen, etc. These screens not only provide rich information services, but also improve driving safety and riding comfort.

[0039] The development of in-vehicle screen projection technology enables in-vehicle displays to display content from mobile devices, such as navigation, video, music, etc., which greatly enhances the functionality and entertainment of the in-vehicle system. For example, through the in-vehicle screen projection solution, users can project videos, music, games and other content on their mobile phones to the in-vehicle display in real time and enjoy the visual feast brought by the big screen. The application of this technology not only improves the entertainment during driving, but also improves the convenience of operation. Users can operate through the touch screen or voice control.

[0040] The current screen projection methods include mobile phone interconnection (such as Carplay, Carlife, Hicar, Android Auto, etc.) and wireless projection (such as wireless network and Bluetooth connection, etc.). In the mobile phone interconnection projection method, Carplay, Carlife, Hicar, and Android Auto need to be connected to a mobile phone to realize their functions. If the user's mobile phone encounters a connection problem, its screen projection function may be restricted, and the compatibility of the user's mobile phone used in mobile phone interconnection projection is limited. Not all mobile phones support these projection applications. Due to cost and development cycle considerations, not all car models support these mobile phone interconnection applications, which may limit the scope of drivers' use of these functions and prevent them from making full use of the screen inside the car. The connection of wireless screen projection relies on wireless network or Bluetooth, which may be affected by factors such as signal interference and unstable connection, resulting in problems such as screen projection delay and freeze. When using wireless screen projection for video transmission, since wireless transmission may be limited by the transmission bandwidth, it cannot provide the same video quality and real-time as wired connection. Problems such as reduced image quality and video delay may occur, affecting the user's viewing experience. Wireless screen projection requires maintaining the connection and data transmission of mobile phones or other terminal devices, which will have a certain impact on the battery life of the terminal device. The mobile phone will consume more battery power when connecting and transmitting data, which may shorten the battery life and require additional power support or frequent charging.

[0041] like Figure 4 As shown, it is a block diagram of an existing vehicle projection display, ECU1 is the vehicle's on-board communication chip, ECU2 is the vehicle's data display device, the on-board communication chip is the vehicle's on-board status control chip, which is used to collect the vehicle's on-board data, the data display device is each display screen on the vehicle, the on-board communication chip is communicatively connected with the data display device, and the data display device displays the on-board data information collected in the on-board communication chip.

[0042] The vehicle computer communication chip is equipped with a vehicle computer data processing module (i.e., the Processor module in ECU1) and a vehicle computer data serial module (i.e., the Serializer module in ECU1). 2 C communicates with the vehicle data serial module and configures the serial / deserialization and screen parameters of the data display device. At the same time, the vehicle data processing module generates a display image and converts it into a serial data stream through the vehicle data serial module. The serial data is then transmitted to the data display device through a specific transmission medium (such as FPD-LINK or GMSL. FPD-LINK and GSML are a dedicated high-speed serial data transmission protocol that is widely used in the automotive industry. They provide high-bandwidth and low-latency transmission to support high-quality video and image display). At the receiving end of the data display device, the data display device includes a data deserialization module (i.e., the Deserializer module in ECU2) and a display screen (i.e., the Display module in ECU2). The data deserialization module restores the serial data to parallel video data and displays it through the display screen. Figure 4 It can be seen that the display architecture of traditional vehicle projection screens may be limited by past designs and technologies, making it difficult to achieve certain innovations and new functions. At the same time, it lacks flexibility and cannot meet specific customization requirements or adapt to different application scenarios. Therefore, in view of the problems existing in the current vehicle screen projection method, the vehicle projection display method, vehicle projection display device and vehicle projection display system described in this application are proposed.

[0043] The in-vehicle screen projection display method described in this application is as follows: Figure 1 As shown, including:

[0044] Step S100, acquiring terminal data transmitted by the terminal device through the data transmission line;

[0045] Step S200, determining display information of a data display device of the vehicle according to vehicle status data of a vehicle in communication connection with the terminal device;

[0046] Among them, the data display device described in this application includes the vehicle's central control screen and non-central control screen. The non-central control screen includes the HUD screen, instrument screen, co-pilot screen, rear entertainment screen, air-conditioning screen, armrest screen, etc., that is, all screens of the vehicle except the central control screen are determined to be non-central control screens.

[0047] Further, the first embodiment of step S200 includes steps S211 and S212:

[0048] Step S211, in response to receiving a start signal sent by the vehicle, obtaining in real time a vehicle power value of the vehicle in a start state;

[0049] The start signal indicates that the vehicle is in the start state.

[0050] Step S212: when the vehicle power value is greater than or equal to a preset power threshold, determine that the data display device displays terminal data;

[0051] When the vehicle power value is less than a preset power threshold, it is determined that the data display device does not display terminal data.

[0052] Furthermore, in order to ensure the driving safety of the vehicle, it is necessary to adjust the display information of each data display device according to the driving state of the vehicle. Therefore, a second embodiment of step S200 is proposed, including steps S221-S222:

[0053] Step S221, in response to receiving a start signal sent by the vehicle, obtaining a vehicle speed value of the vehicle in a start state in real time;

[0054] Step S222: when the vehicle speed value is greater than zero, determine that the data display device corresponding to the central control screen of the vehicle does not display terminal data, and the data display device corresponding to the non-central control screen of the vehicle displays terminal data.

[0055] Further, the third embodiment of step S200 includes step S231:

[0056] Step S231, in response to receiving a sleep signal sent by the vehicle, determining that the data display device does not display terminal data;

[0057] The sleep signal indicates that the vehicle is in a sleep state.

[0058] When the vehicle is in motion, that is, the vehicle speed is greater than zero, in order to ensure the driver's driving safety, the projection function of the central control screen needs to be turned off so that the central control screen displays the vehicle status information for the driver to view, ensuring that the driver's attention is focused on the road, reducing distractions, and reducing driving risks; when the vehicle battery is too low or the vehicle is in sleep mode, in order to ensure the normal operation of the vehicle, the projection function of all screens of the vehicle needs to be turned off.

[0059] Step S300: When it is determined that the data display device displays the terminal data, the terminal data and the vehicle status data are serially communicated to obtain the terminal serial data and display it through the data display device;

[0060] Step S400: When it is determined that the data display device does not display the terminal data, the vehicle computer serial data is displayed through the data display device.

[0061] Therefore, the in-vehicle screen projection display method provided by the embodiment of the present invention provides technical support for achieving a safe, efficient and intuitive interactive experience, which can better serve drivers and passengers and enhance the overall driving and riding experience.

[0062] On the other hand, the present application also protects a vehicle-mounted projection display device, which is arranged in a vehicle, such as Figure 2 As shown, a terminal interface module, a terminal data processing module, a terminal data serial module, and a data conversion module are deployed in the vehicle-mounted projection display device, and the terminal data serial module is connected to the terminal interface module, the terminal data processing module, and the data conversion module.

[0063] The terminal interface module is used to establish a data communication relationship with the user's terminal equipment and obtain terminal data transmitted by the terminal equipment through the data transmission line.

[0064] The terminal data processing module is connected to the communication bus of the vehicle and is used to determine the display information of the data display device of the vehicle according to the vehicle status data of the vehicle.

[0065] The terminal data serial module is used to perform serial communication processing on the terminal data and the vehicle status data to obtain the terminal serial data when it is determined that the data display device displays the terminal data.

[0066] The data conversion module is used to convert and output the terminal serial data and the vehicle computer serial data.

[0067] like Figure 3As shown, ECU3 is the vehicle-mounted projection display device described in this application, and the terminal interface module is the Interface module in ECU3. As a feasible embodiment, at least one data transmission interface is deployed on the terminal interface module, and the data transmission interface is one of the HDMI signal interface, DP signal interface, and Type-c signal interface. By supporting multiple projection interfaces to meet the connection requirements of different devices, users can connect various types of terminal devices, whether it is a smart phone, tablet computer, laptop computer or other portable device, the user can project its content onto the display screen of the vehicle through the corresponding interface. This greatly expands the scope of application and flexibility of projection, and provides more choices and convenience. The terminal interface module is used to establish a data communication relationship with the user's terminal device. The user's terminal device can be a mobile phone, laptop computer, tablet computer, etc. that can communicate data through a data line. Before projection, the user connects the terminal device that needs to be projected to the corresponding data transmission interface on the terminal interface module through a data line, so as to establish a communication connection relationship between the terminal device and the vehicle-mounted projection display device. The terminal interface module responds to receiving the terminal data transmitted by the terminal device through the data transmission line, and transmits the terminal data to the terminal data serial module.

[0068] The terminal data processing module is the Processor module in ECU3. The terminal data processing module is connected to the vehicle's communication bus. Since the current vehicle communication bus mostly uses the CAN bus, the terminal data processing module of the present application is also connected to the vehicle's CAN bus. Or, when improving the current vehicle screen projection system, first determine the communication bus of the vehicle that needs to be improved, and then connect the terminal data processing module of the vehicle-mounted screen projection display device of the present application to the communication bus of the vehicle that needs to be improved, so as to increase the vehicle-mounted screen projection display device of the present application without changing the communication structure of the original vehicle, so as to achieve the purpose of flexible screen projection. The terminal data processing module is used to obtain the vehicle's status information by connecting to the vehicle's communication bus, and to determine whether to turn on the screen projection function of the data display device based on the vehicle's status information.

[0069] The terminal data processing module is respectively connected through I 2 C communication bus establishes data communication relationship with the terminal data serial module and data conversion module, and the terminal data processing module establishes data communication relationship with the terminal data serial module and data conversion module through I 2 The C interface configures registers of the terminal data serial module, data conversion module and data deserialization module in the data display device, such as TSKIP_CNT mode, FPD-LINK / GSML channel selection, clock, internal image generation, etc.

[0070] The terminal data serial module is the Serializer module in ECU3. The terminal data serial module is used to perform serial communication processing on the terminal data output by the terminal interface module and the vehicle data output by the terminal data processing module to obtain terminal serial data, and transmit the terminal serial data to the data conversion module through the serial data transmission protocol of the vehicle. The terminal serial data includes the screen information of the terminal device that needs to be projected. The terminal data serial module is mainly used to convert the parallel signals of DP, HDMI, and Type-c in the data transmission interface of the terminal interface module into serial signals of FPD-LINK / GSML. As a feasible embodiment of the present application, the device model of the terminal data serial module can be DS90UB949, DS90UB943, MAX9291, etc. It should be noted that the deserializer of some devices needs to be matched with a specific serializer to display normally. Therefore, before improving the vehicle, you can confirm the deserialization signal of the vehicle model screen in a variety of ways to apply the corresponding serializer chip, such as by reading the serializer register or checking the deserializer chip silk screen to confirm, or first obtain the vehicle model screen timing parameters (parameters used to control data transmission or processing speed). Since screens of different brands and models have their own parameters, the serializer chip registers are configured through the vehicle model screen timing parameters.

[0071] The data conversion module is a Switch IC module in ECU3. The data conversion module is connected to the vehicle's onboard communication chip (i.e., ECU1) and the data display device (i.e., ECU2). The data conversion module is used to convert and output the terminal serial data and the vehicle's onboard serial data, and convert the two-way FPD-LINK / GSML signals of the terminal serial data and the vehicle's onboard serial data into one FPD-LINK / GSML signal output. It is similar to a signal output switch and can be dynamically configured by the I 2 The C register switches the input source to determine whether to output the vehicle serial data of ECU1 (the video signal output by the vehicle, which contains the vehicle's driving information, such as vehicle speed, navigation instructions, vehicle status, etc.) or the terminal serial data of ECU3 (the video signal input by the user's terminal device, that is, the data information that needs to be projected).

[0072] When improving current vehicles, seamless integration with existing car cockpit central control systems is taken into consideration to reduce the cost and technical difficulty required to update the system. Therefore, by adding the on-board projection display device of the present application between the vehicle-computer communication chip and the data display device of the traditional vehicle projection display architecture, dynamic control of vehicle data and terminal data can be achieved, and the output data of ECU1 and the output data of ECU3 can be flexibly converted and displayed on ECU2. This makes the on-board projection display device of the present application compatible with existing systems of various models without the need for large-scale modifications, providing vehicle manufacturers with greater flexibility and convenience.

[0073] Furthermore, when the terminal data processing module receives the start signal sent by the vehicle, it obtains the vehicle speed value and vehicle power value of the vehicle in the start state in real time. If the vehicle speed value is greater than zero, it sends a first screen projection signal to the data conversion module (the first screen projection signal indicates that the screen projection function of the central control screen is turned off); if the vehicle power value is less than the preset power threshold or / and receives the sleep signal sent by the vehicle, it sends a second screen projection signal to the data conversion module (the second screen projection signal indicates that the screen projection function of all data display devices is turned off).

[0074] Furthermore, after receiving the terminal serial data, the data conversion module obtains the screen projection signal sent by the terminal data processing module in real time, and sends the terminal serial data to each data display device when the screen projection signal sent by the terminal data processing module is not received; when receiving the first screen projection signal sent by the terminal data processing module, the terminal serial data is sent to the data display device corresponding to the non-central control screen, and the vehicle computer serial data is sent to the data display device corresponding to the central control screen; when receiving the second screen projection signal sent by the terminal data processing module, the vehicle computer serial data is sent to each data display device.

[0075] In addition, the present application also proposes a vehicle-mounted projection display system, such as Figure 3 As shown, it includes a vehicle's vehicle-computer communication chip, a data display device and a vehicle-mounted projection display device. The vehicle-computer communication chip is communicatively connected with the data display device through the vehicle-mounted projection display device.

[0076] In order to further expand the user's entertainment and work functions, the present invention aims to allow users to project their personal terminal devices onto the central control screen, co-pilot screen and rear entertainment screen in the cockpit of the vehicle to provide a richer entertainment and information experience, further meet the user's personalized needs, and adopt low latency to ensure the clarity, smoothness and realism of the projection screen, and provide the best user experience. Users can run multiple applications or windows on the same screen at the same time, improve mobile office efficiency, and enable users to handle various tasks and information more efficiently. And the vehicle-mounted projection display device of this application supports multiple projection protocols, and allows users to switch the corresponding screen to the user use mode in different vehicle scenarios, which provides users with more choices and can also meet the needs of vehicle manufacturers for functional diversity. In addition, the vehicle-mounted projection display system of this application also supports multi-tasking. Users can run multiple applications or windows on the same screen at the same time, allowing users to efficiently handle multiple tasks, such as viewing navigation maps, answering calls, playing music, etc. at the same time, improving the efficiency of work and entertainment.

[0077] An embodiment of the present invention further provides a computer program product, which includes program code. When the program product is run on an electronic device, the program code is used to enable the electronic device to execute the steps of the method according to various exemplary embodiments of the present invention described above in this specification.

[0078] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0079] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0080] In an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.

[0081] It will be appreciated by those skilled in the art that various aspects of the present invention may be implemented as a system, method or program product. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as a "circuit", "module" or "system".

[0082] The electronic device according to this embodiment of the present invention is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0083] The electronic device is presented in the form of a general-purpose computing device. The components of the electronic device may include, but are not limited to: the at least one processor mentioned above, the at least one storage device mentioned above, and a bus connecting different system components (including storage devices and processors).

[0084] The storage stores program codes, which can be executed by the processor, so that the processor executes the steps according to various exemplary embodiments of the present invention described in the above “Exemplary Method” section of this specification.

[0085] The memory may include readable media in the form of volatile memory, such as random access memory (RAM) and / or cache memory, and may further include read only memory (ROM).

[0086] The storage may also include a program / utility having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include the implementation of a network environment.

[0087] The bus may represent one or more of several types of bus structures including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures.

[0088] The electronic device may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable a user to interact with the electronic device, and / or any device that enables the electronic device to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface. Furthermore, the electronic device may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter.

[0089] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0090] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present specification.

[0091] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0092] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0093] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0094] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0095] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0096] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0097] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vehicle-mounted screen projection display method, characterized in that: include: Acquire terminal data transmitted by the terminal device through the data transmission line; Determining display information of a data display device of the vehicle according to vehicle status data of a vehicle in communication connection with the terminal device; In the case where it is determined that the data display device displays the terminal data, the terminal data and the vehicle status data are subjected to serial communication processing to obtain terminal serial data and display the terminal serial data through the data display device; When it is determined that the data display device does not display the terminal data, the vehicle computer serial data of the vehicle is displayed through the data display device.

2. The in-vehicle screen projection display method according to claim 1, characterized in that: The determining, based on vehicle status data of a vehicle in communication connection with the terminal device, display information of a data display device of the vehicle comprises: In response to receiving a start signal sent by the vehicle, obtaining in real time a vehicle power value of the vehicle in a start state; the start signal indicates that the vehicle is in a start state; When the vehicle power value is greater than or equal to a preset power threshold, the data display device is determined to display the terminal data; when the vehicle power value is less than the preset power threshold, the data display device is determined not to display the terminal data.

3. The in-vehicle screen projection display method according to claim 1, characterized in that: The data display device includes a central control screen and a non-central control screen of the vehicle; Wherein, determining the display information of the data display device of the vehicle according to the vehicle status data of the vehicle in communication connection with the terminal device includes: In response to receiving a start signal sent by the vehicle, obtaining in real time a vehicle speed value of the vehicle in a start state; the start signal indicates that the vehicle is in a start state; When the vehicle speed value is greater than zero, it is determined that the data display device corresponding to the central control screen of the vehicle does not display the terminal data, and the data display device corresponding to the non-central control screen of the vehicle displays the terminal data.

4. The in-vehicle screen projection display method according to claim 1, characterized in that: The determining, based on vehicle status data of a vehicle in communication connection with the terminal device, display information of a data display device of the vehicle comprises: In response to receiving a sleep signal sent by the vehicle, it is determined that the data display device does not display the terminal data; the sleep signal indicates that the vehicle is in a sleep state.

5. A vehicle-mounted projection display device, characterized in that: The vehicle-mounted projection screen display device is arranged in a vehicle, and the vehicle-mounted projection screen display device comprises: The terminal interface module is used to establish a data communication relationship with the user's terminal equipment and obtain the terminal data transmitted by the terminal equipment through the data transmission line; A terminal data processing module, connected to the communication bus of the vehicle, for determining display information of the data display device of the vehicle according to the vehicle status data of the vehicle; The terminal data serial module is used to perform serial communication processing on the terminal data and the vehicle status data to obtain the terminal serial data when it is determined that the data display device displays the terminal data; The data conversion module is used to convert and output the terminal serial data and the vehicle computer serial data.

6. The vehicle-mounted projection display device according to claim 5, characterized in that: The terminal data processing module is connected to the CAN communication bus of the vehicle and is respectively connected to the CAN bus of the vehicle through I 2 The C communication bus establishes a data communication relationship with the terminal data serial module and the data conversion module.

7. The vehicle-mounted projection display device according to claim 5, characterized in that: The terminal data serial module transmits the terminal serial data to the data conversion module through the serial data transmission protocol of the vehicle.

8. The vehicle-mounted projection display device according to claim 5, characterized in that: The data conversion module is connected to the vehicle computer communication chip and the data display device of the vehicle; The vehicle computer communication chip is used to send the vehicle computer serial data to the data conversion module; The data display device is used to perform deserialization communication processing on the received serial data to obtain deserialized data and display it.

9. The vehicle-mounted projection display device according to claim 5, characterized in that: At least one data transmission interface is deployed on the terminal interface module, and the data transmission interface is one of an HDMI signal interface, a DP signal interface, and a Type-c signal interface.

10. A vehicle-mounted projection display system, characterized in that: It includes a vehicle-mounted computer communication chip, a data display device and a vehicle-mounted screen projection display device as described in any one of claims 5-9, and the vehicle-mounted computer communication chip is communicatively connected with the data display device through the vehicle-mounted screen projection display device.

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